<template>
  <view class="goods-item" @click="$emit('on-click')">
    <!-- 商品左侧图片区域 -->
    <view class="goods-item-left">
      <!-- 单选框组件 -->
      <radio v-if="showRadio" :checked="goods.goods_state" color="#C00000" @click="$emit('on-radio-change', goods.goods_id)"></radio>
      <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
    </view>
    <!-- 商品右侧信息区域 -->
    <view class="goods-item-right">
      <!-- 商品标题 -->
      <view class="goods-name">{{ goods.goods_name }}</view>
      <view class="goods-info-box">
        <!-- 商品价格 -->
        <view class="goods-price">￥{{ goods.goods_price | tofixed }}</view>
        <!-- 商品数量 -->
        <uni-number-box v-if="showNum" :min="1" :value="goods.goods_count" @change="changeValue"></uni-number-box>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: 'my-goods-item',
  // 接收props
  props: {
    // 单个商品数据
    goods: {
      type: Object,
      default: () => ({})
    },
    // 是否展示图片左侧的 radio
    showRadio: {
      type: Boolean,
      // 默认不显示
      default: false
    },
    // 是否展示价格右侧的 NumberBox 组件
    showNum: {
      type: Boolean,
      default: false
    }
  },
  emits: ['on-click', 'on-radio-change', 'on-count-change'],
  filters: {
    // 把数字处理为带两位小数点的数字
    tofixed(num) {
      return Number(num).toFixed(2);
    }
  },
  data() {
    return {
      // 默认图片
      defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
    };
  },
  methods: {
    // 当数量发生改变时触发
    changeValue(e) {
      // 触发父组件的自定义事件on-count-change,并传递要修改的数据的goods_id和修改后的数量
      this.$emit('on-count-change', { goods_id: this.goods.goods_id, goods_count: e });
    }
  }
};
</script>

<style lang="scss">
.goods-item {
  // background-color: #f5f5f5;
  display: flex;
  padding: 10px 5px;
  // 解决 1px像素问题，可以参考优医问诊项目的hairline
  border-bottom: 1px solid #f0f0f0;

  .goods-item-left {
    margin-right: 5px;
    // 增加的样式
    display: flex;
    justify-content: space-between;
    align-items: center;
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }

  .goods-item-right {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
    }
    .goods-info-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      .goods-price {
        font-size: 16px;
        color: #c00000;
      }
    }
  }
}
</style>
